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Page 6H-26 <br /> 2003 Edition <br /> Notes for Figure 611-11—Typical Application 11 <br /> Lane Closure on Two-Lane Road with Low Traffic Volumes <br /> Option: <br /> 1. This TTC zone application may be used as an alternate to the TTC application shown in Figure 6H-10 <br /> (using flaggers)when the following conditions exist: <br /> a. Vehicular traffic volume is such that sufficient gaps exist for vehicular traffic that must yield. <br /> b. Road users from both directions are able to see approaching vehicular traffic through and beyond the <br /> work site and have sufficient visibility of approaching vehicles. <br /> 2. The Type B flashing warning lights may be placed on the ROAD WORK AHEAD and the ONE LANE <br /> ROAD AHEAD signs whenever a night lane closure is necessary. <br />